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OpenStudy (anonymous):
Simplify. Please show all of your work -3x^2+4y^2-(5x^2-7y^2-1)
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jhonyy9 (jhonyy9):
-3x*2 +4y*2 -(5x*2 -7y*2 -1) = -3x*2 +4y*2 -5x*2 -(-7y*2) -(-)1 so because -(-)1=+1 your equation will be = -3x*2 +4y*2 -5x*2 +7y*2 +1 = -8x*2 +11y*2 +1
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